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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Controls And Fuel - 1.6L (LH7) Diesel - Diagnostic Information And Procedures (P205B - P2BAA) And Symptoms) >> Diagnostic Information And Procedures >> DTC P2457: Exhaust Gas Recirculation (EGR) Cooler Low Efficiency >> Conditions for Setting the DTC

Conditions for Setting the DTC

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The ECM detects that the EGR cooler efficiency is lower than a calibrated value for greater than 100 s.

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